So I'm somewhat vehicle retarded as you may know already. I've done a lot of reading about efan's, 180 thermostats, etc. I'm wanting to get a lil more horsepower out of my truck and alot of people say if your truck has a stock E-fan in addition to your stock clutch fan, then just remove the stock clutch fan and the stock e-fan will be ample.

My question is does my truck have this stock e-fan and where the heck is it located if I do? Again I'm vehicle stupid. What does it look like? I have looked under my hood for a short while the other day and couldn't seem to find anything that resembled fan blades other than the large clutch fan. My truck is a 1998 SLT 5.2L V8 4x4.

Also, does the 180 Tstat control the clutch fan or the stock efan? I'm asking because I was gonna buy one after I took my clutch fan out (given my stock efan supplies ample cooling, given that I have a stock e-fan), but if it only regulates the clutch fan, then there would be no point in buying one.

Thanks!

 

The t-stat works separately. When the engine gets to the specified temperature, it opens to allow coolant through the engine. Stock is 195°.

The fan-clutch works independent of the e-fan and t-stat. It turns whenever the engine is turning. It is very loud in most cases, so many members (owners) choose to remove them. Once you are traveling above 40 or so on flat ground, the fan-clutch becomes unnecessary; since the 40mph air is sufficient to cool the engine.

The e-fan is located inside the fan guard. It might depend on if you have A/C, then you have an e-fan. Regardless, some owners put a larger capacity e-fan on their truck and remove the fan-clutch to reduce the noise "off the line". The e-fan is activated when you turn on your A/C.

Some owners go with the 180° t-stat and higher capacity e-fan at the same. It all depends on your driving style, traffic, towing, etc.

As for more HP.... you only got what you got. Some of the experts will chime in on this portion.

 

You dont have a 4.7 so unless a p.o installed one you wont have one. Just your stock mechanical fan.

 

I think more had an efan that you may think

 

I have a 2000 3.8 with both the mechanical fan and the electric fan. My truck does have A/C so I cant speak for the non A/C trucks, the stock E fan is mainly for the A/C to function correctly at low speeds. While the larger mechanical fan is for flowing lots of air over your radiator to maintain the your engine below the max coolant temp to keep you from over heating. The location of the Stock E fan is right against the rad deep in the fan shroud between the clutch fan and the rad ( may need a flashlight ) it is made of black plastic. If all you see is the rad fins it isn't there. I still run with both because it hasn't given me any issues in either the cold -40C or hot humid 35C weather. I also run the 195 degree thermostat all year and again no issues, and good heat if that kind of thing matters to you. Everything works well as it sits for daily driver duty, IMO if there is no issues with your truck cooling system right now don't mess with it.

 

After 2000 you could have both but no 5.2 or 3.9 before I have ever saw with a factory Efan.

 

All Dakotas with the 2.5L only had an eFan and were very big and chunky the 2.5 never had a waterpump fan to save power

 

How do you replace the efan? Mine is the exact one in your picture and I cant find a replacement...

 

Something Im trying to get ahead of you are correct I dont think they are available anymore two options that I can see find a junker that may be very hard because the older 2.5 1999 down had that kind 2000 up had a very different efan.

Look here as a start LINK

I think your best bet is mod a newer efan to work on the older 2.5 Dakotas and fab a custom mount for it.

Look at the link and ask more questions

This is the newer efan same as the V6 and V8 efan you can find them at about $80 I think they have the same connection I hope

 

Well I think I just found one look here under 1998 dakota 2.5 cooling system/cooling It could be the wrong part I would call them and ask a few questions http://www.wholesalemopar.com/

OH Wow it looks like they do have them but at $330 Wow